I brewed an oatmeal stout and bottled it about 2 months ago. Most of the batch was drank within a few weeks of bottling. Tonight I opened the last bottle. This pour had significantly better head retention then the rest of them.
Does head retention improve with age? I know the typical factors are clean glassware, no mustache wax, etc. But all things seem equal, except it sat for a good month longer than the rest.